Review on Zefal Mirror Spin: Compact and Versatile Rear View Mirror, 2.3 x 1.57 x 0.39 Inch by Rick Marie

Field of view is limited as it is a small mirror. If it's not in the exact right position, it's useless. And that's the problem, it's easy to knock it off the spot through any bumps in the road. Although he frequently had to adjust while riding, he eventually became too weak to hold any position. The single screw only tightens the hinge of the mirror itself, not the part that attaches the mirror to the handlebars, which causes the mirror to rotate everywhere. I would like to return it but it is over 30 days old. Do not buy this mirror!